The immunization rates for five-year-olds in Australia was 93 percent in 2016, according to the Australian Institute of Health and Welfare. That's short of the 95 percent rate recommended for herd immunity, which is the ideal rate of immunization to protect those who can't receive vaccinations for medical reasons.
This low rate of immunization has caused several states to adopt a "No Jab, No Play" policy, requiring that children be immunized before they can enroll in childcare or access government benefits.
One reason some parents are not immunizing their children is the now debunked claim that vaccinations cause autism. They don't. In fact, vaccinations save millions of lives around the globe every year, and were essential in wiping out terrible diseases, like polio.